Conveyer



Feb. 18, 1930. P. M. PEARSON 1,747,388

CON VEYER Filed Sept. 15, 1928 v 1NVE1 vTbR.

Y QQTTORNEYS' Patented Feb. 18, 1930 UNITED STATES Arr PIERCE MANERED PEARSON, OF VJAUWATOSA, WISCONSIN, ASSIGNOR T0 HUEBSGH MANUFACTUBING"GOMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN CONVEYER Application filed September 15, 1928. Serial No. 306,134.

The invention relates to conveyers and more particularly to conveyers of the monorail type.

The usual forms of conveyers embody a single, flanged wheel engaging the rail and a keeper wheel below the rail. This type of construction produces great Wear between the Wheel and the rail where the rail is inclined from the vertical or is curved, and where the inclination is pronounced the breaking effect produced by the binding action between the wheel and the rail prevents efficient operation of the conveyer. The object of this invention is to provide a conveyer which overcomes the above disadvantages by the provision of two separately rotatable, coaxially disposed wheels engageable with the rail, to carry the load, and similar wheels below the rail to keep the conveyer on the rail and also act as load carriers when the rail is inclined from the horizontal. By such an arrangement either one ofthe wheelsmay rotate faster than the other, as when going around curves, and the rail may be inclined from the vertical to the horizontal, if desired, without impairing the operating efliciency of the conveyer. Furthermore, the wheels of the conveyer are preferably conically inclined and reduce the frictional contact between them and the rail to a low figure, this friction being further reduced by ball bearing journals.

The invention further consists in the several features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings Fig. 1 is an end elevation view of a conveyer embodying the invention, parts being broken away and parts being shown in section;

Fig. 2 is a side elevation view of part of the conveyor;

Fig. 3 is a section taken on the line 33 of Fig. 2;

Fig. 4 is a detail end elevation View showing certain modifications.

Referring to the drawings the numeral 5 designates the carrier frame, of channel shape, having a web or back portion 6, which is dished inwardly by a single corrugation 7,

as shown in Fig. 3, to provide an arched construction for strength, and flanges 8, which have inwardly directed extensions or arms 9 substantially parallel to the back portion to provide 'outboard'support-s for the'axles 10 17 and the lower wheels 18 each having recesses 19, and ball'bearings 20 are mounted 1n sa d recessesand the race portions 16. A plurality of shims 14 are mounted between the bushings 14: and are removable or adjustable to take up for Wear on the bushings. Between each set of wheels an apertured ring '21, with ball bearings 23 disposed in the apertures, is mounted, said balls having bearing contact wlth the inner sideof each set of wheels. With this constructionit will be obvious that either wheelrmay revolve independently of the other orat a speed different from that of the other. .Each wheel 17' or 18 has a conically inclined rail-engaging sur- ."face 24. In Fig. 1 this surface 24; is shown A as formed bya plain conical surface, while in'Fig. 4 I have shown thesurface 24: of the wheels as concavely,.conically inclined. The

construction shown in Fig. 1 provides a sub stantially line contact between the wheels and the curved edges 25 'of the-rail 26 while that shown in Fig. 1 conforms more-nearly to the curvature of the rail and gives a greater contact surface, which-maybe desirable for certain classes of work.

In either instance the rail 26 is disposed between the two sets of wheels 17 and 18 and preferably with a'slight clearance from the lower wheels 18 when the rail-is vertically Y Y disposed.

The conveyer may be provided'with any suitable means for connecting it with-its load and in Fig. 1 I have shown a hook 27 for this purpose. t With this construction, as the wheels are independently rotatable, when the conveyer is track, ofaframe havingspaced, axle-supportlong'lifeh p I c a o it to be understood that'this invention. is not tobelimited to any particular form t or arrangement. of partsv except in so far as travelling on a curved section of rail the outer wheel may travel faster than theinner wheel and thus prevent a braking efiect and'due to the fact that the traveler or conveyerhassubstantially line contact with the rail it will turn a corner on an extremely short radius .as distinguished from the ordinary flanged wheel. clined at any inclinationfrom thevertical to the horizontal and the conveyer'willfu'nction efficien-tly as the canting of the track, as shown in dotted lines in Fig. 1, may bring either one of the lower wheels into contact with the rail.-

Furthermore, the arrangement of the beariings efliciently takesup' the thrusts" imposed by the load and results in a conveyer having a j I desire such limitations are included in the claims. What I claim as my'invention is: s t

Furthermore, the track may be intween said races and each of said wheels, and

a ball thrust bearing between each set of wheels. I I i V 7. In a .conveyer, the combination with a track, of a frame having an axle-supporting portion, an axle mountedon said portion, a set of wheels on said axle having track-engaging surfaces, bearings for each wheel, and a thrust-bearing between said wheels, In testimony whereof, Ijafiix my signature.

PIERCE I MANF-RED PEARSON.

I 1. In a ,conveyer, thefcombination with a I track, of a frame,spaced sets of wheels I mounted on said frameandfcooperating respectively with the top and bottom of said track, the wheels in each set being co-axially disposed and havinginclinedtrackengaging surfaces and being independently rotatable. I

2. In a conveyer, the combination with a ing portions, axles mounted in said portions, a

V setiof wheels on; each axleicooperating with said track and hav ng inclined, track-engag V ing surfaces, bearings for each wheel, and a thrust bearing betweenthe Wheelsof each set.

3. In a conveyer, the combination with a track, of a'frame, spaced sets of wheels mountedaon said frame and cooperating respectively with the top and bottom off'said i track, the Wheels ineach set being Coaxially disposed and having conical, track-engag- V, .ing surfaces inclined toward each other, and

bearings for each wheelproviding independ,

ent rotation thereof.,

54. In a conveyer, the; combination'iwith it -t rack, of a frame havingaback portion and pendently rotatable wheels mounted 0I1 each 1 i 6. In aconveyer, thecombination with a track, ofa frame having an arched back pori-tion and spaced arm portions, axles mounted in sand back portlon and each of said'arms,

' bearingraces on each'axle, a pair of track engaging wheelstonfeach axle ball bearingsbe-o 7 arms spa-ced therefrom, axles mountedin said I 1 r i back'portion and each of said arms, and inde- 

